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---
title: "RAG (检索增强生成)"
created: 2026-06-03
updated: 2026-06-03
type: concept
tags: [RAG, LLM, retrieval, knowledge]
status: placeholder
---
# RAG (检索增强生成, Retrieval-Augmented Generation)
> ⚠️ 占位符页面 — 待完善
RAG 是一种将外部知识检索与 LLM 生成相结合的架构范式。通过从知识库中检索相关文档片段作为上下文,增强 LLM 的事实准确性和知识覆盖范围。
**扩展**
- [[multimodal-rag|多模态 RAG]]:将 RAG 扩展到图像、视频等多模态数据
- [[rag-systems|RAG 系统]]
## 闭环风险
单次 RAG 无害,但多次迭代形成 [[rag-closed-loop|RAG 闭环迭代]] 时AI 生成→索引→检索→再生成的循环会导致内容多样性断崖式下降——这是 [[llm-spiral-of-silence-2026|LLM 沉默螺旋]] 在检索场景的核心表现。
## 相关概念
- [[multimodal-rag|多模态 RAG]]
- [[rag-systems]]
- [[context-engineering|上下文工程]]
- [[rag-closed-loop|RAG 闭环迭代]]
- [[llm-spiral-of-silence-2026|LLM 沉默螺旋]]